Mendelian Genetics

Question 1

What is True Breeding?

Answer 1

self-fertilization produces offspring all identical to the parent

Question 2

In True Breeding what generation are the parental plants?

Answer 2

P generation

Question 3

What is a hybrid

Answer 3

cross-fertilization of two different varieties

Question 4

What is a hybrid offspring of a P generation called?

Answer 4

F1 generation

Question 5

What is a monohybrid cross

Answer 5

cross between two individuals differing in one character

Question 6

What does Mendel’s Law of Segregation state?

Answer 6

Cells contain two copies of each gene
alleles do not blend
alleles must separate during meiosis

Question 7

What would a Homozygous x Homozygous set up look like?

Answer 7

aa AA

Question 8

What would a Heterozygous x homozygous set up look like

Answer 8

Aa AA

Question 9

What would a heterozygous x heterozygous look like?

Answer 9

Aa Aa

Question 10

What is a dihybrid corss?

Answer 10

mating of parental varieties that differ in two characters?

Question 11

What is the law of independent assortment state?

Answer 11

the inheritance of one character has no effect on the inheritance of another

Question 12

What is a testcross?

Answer 12

mating between an indivisual of unknown genotypes and a homozygiys recessive individual

Question 13

What can a testcross show?

Answer 13

whether the unknown genotype includes a recessive allele

Question 14

What might a homozygous recessive genotype look like?

Answer 14

aa

Question 15

What would a homozygous dominate genotype look like?

Answer 15

AA

Question 16

What are the two types of inherited disorders?

Answer 16

Recessive Inheritance
Dominant Inheritance

Question 17

What are the traits of a Recessive Inheritance?

Answer 17

two recessive alleles are needed to show disease
heterozygous parents are carriers of the disease causing allele
probability increases with inbreeding

Question 18

What are traits of Dominant inheritance?

Answer 18

one dominant allele is needed to show disease
dominant lethal alleles are usually eliminated from population

Question 19

How does modern technology provide insight into one’s genetic legacy?

Answer 19

obtain genetic information
genetic testing can identify parents who are heterozygous carriers

Question 20

What is Mendelian Inheritance?

Answer 20

determined by a dominate or recessive traits passed from parents

Question 21

what is a gene(character)

Answer 21

heritable feature that varies among individuals

Question 22

what is an allele(trait)

Answer 22

a variant of a character